KR950702767A - Code Division Multiple Processing (CDMA) communication system and receiver for the receiver (CDMA communication system) - Google Patents

Code Division Multiple Processing (CDMA) communication system and receiver for the receiver (CDMA communication system)

Info

Publication number
KR950702767A
KR950702767A KR1019950700284A KR19950700284A KR950702767A KR 950702767 A KR950702767 A KR 950702767A KR 1019950700284 A KR1019950700284 A KR 1019950700284A KR 19950700284 A KR19950700284 A KR 19950700284A KR 950702767 A KR950702767 A KR 950702767A
Authority
KR
South Korea
Prior art keywords
sequence
communication system
receiver
detector
calculated
Prior art date
Application number
KR1019950700284A
Other languages
Korean (ko)
Other versions
KR100336544B1 (en
Inventor
티엘레케 죄른
Original Assignee
프레데릭 얀 스미트
필립스 일렉트로닉스 엔.브이
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 프레데릭 얀 스미트, 필립스 일렉트로닉스 엔.브이 filed Critical 프레데릭 얀 스미트
Publication of KR950702767A publication Critical patent/KR950702767A/en
Application granted granted Critical
Publication of KR100336544B1 publication Critical patent/KR100336544B1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • H04B1/7105—Joint detection techniques, e.g. linear detectors
    • H04B1/71057—Joint detection techniques, e.g. linear detectors using maximum-likelihood sequence estimation [MLSE]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/216—Code division or spread-spectrum multiple access [CDMA, SSMA]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)
  • Noise Elimination (AREA)

Abstract

본 발명은 데이타 순차가 코드 순차로써 확산되는 경우에 적어도 송신기와 상기 데이타 순차가 검출기에 의해 회복되는 경우에 적어도 수신기를 포함하며, 상기 송신된 데이타 순차의 값에 대한 추정 순차가 송신기(들)와 수니기사이의 통신 채널의 디스크립션이 합체되는 동안에 검출을 목적으로 계산되는 CDMA 통신시스템에 관한 것이다. 데이타 순차의 검출에 대하여 이것은 결합된 모멘트를 계산하여 송신된 데이타 순차용 결합 확률 분포를 계산하고 이로부터 송신된 데이타 순차용 추정 순차를 결정하는 데에 제공한다.The invention includes at least a transmitter when the data sequence is spread as a code sequence and at least a receiver when the data sequence is recovered by a detector, wherein the estimated sequence for the value of the transmitted data sequence is determined by the transmitter (s). A CDMA communication system is calculated for the purpose of detection while the description of the communication channel between the Sunnis is incorporated. For the detection of the data sequence, this provides for calculating the combined moment to calculate the combined probability distribution for the transmitted data sequence and to determine the estimated sequence for the transmitted data sequence.

Description

부호 분할 다중 처리(CDMA)통신 시스템 및 이 시스템의 수신기용 검출기(CDMA communication system)Code Division Multiple Processing (CDMA) communication system and receiver for the receiver (CDMA communication system)

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 N개 이동국과 하나의 기지국을 갖는 CDMA통신 시스템 도시도.1 is a diagram illustrating a CDMA communication system having N mobile stations and one base station.

제2도는 상기 CDMA통신 시스템용 수신기 도시도.2 is a receiver diagram for the CDMA communication system.

제3도는 검출기의 기능 블럭도.3 is a functional block diagram of a detector.

Claims (11)

데이타 순차가 코드순차에 의해 확산되는 경우에 적어도 송신기와 상기 데이타 순차가 검출기에 의해 회복되는 경우에 적어도 수신기를 포함하고, 상기 송신된 데이타 순차용 추정의 순차가 상기 송신기(둘)와 수신기 사이에 위치된 통신채널의 디스크립션이 합체되는 동안 검출을 목적으로 계산되는 CDMA통신 시스템에 있어서, 상기 송신된 데이타 순차용 결합 확률 분포는 결합된 모멘트를 계산하여 계산되고 이로부터 송신된 데이타 순차용 추정의 순차가 유도되는 것을 특징으로 하는 CDMA 통신 시스템.And at least a receiver if the data sequence is spread by code sequence and at least a receiver if the data sequence is recovered by a detector, and the sequence of estimates for the transmitted data sequence is between the transmitter and the receiver. In a CDMA communication system in which the description of a located communication channel is calculated for the purpose of detection, the combined probability distribution for the transmitted data sequential is calculated by calculating the combined moment and the sequence of data sequential estimates transmitted therefrom. CDMA communication system, characterized in that is derived. 제1항에 있어서, 상기 결합 확률 분포는 제한된 세트의 모멘트로써만 계산되는 것을 특징으로 하는 CDMA 통신 시스템.2. The CDMA communication system of claim 1, wherein the joint probability distribution is calculated only with a limited set of moments. 제2항에 있어서, 제1계 모멘트 및 제2계 모멘트는 상기 결합 확률 분포가 계산될때 계산되는 것을 특징으로 하는 CDMA 통신 시스템.3. The CDMA communication system according to claim 2, wherein the first system moment and the second system moment are calculated when the coupling probability distribution is calculated. 제3항에 있어서, 칼만 필터는 검출기로서 이용되는 것을 특징으로 하는 CDMA 통신 시스템.4. A CDMA communication system according to claim 3, wherein the Kalman filter is used as a detector. 제1항 내지 제4항 중 어느 한 항에 있어서, 상기 데이타 순차의 값에 대한 결정은 추정치를 기초로 이행되고, 이들 결정은 상기 검출기 내에서 피드백되는 것을 특징으로 하는 CDMA 통신 시스템.The CDMA communication system according to any one of claims 1 to 4, wherein the determination of the value of the data sequence is carried out on the basis of an estimate, and these determinations are fed back in the detector. 제5항에 있어서, 상기 값이 피드백 될때 상기 추정치의 양이 피드백되는 값을 고려하는 것을 특징으로 하는 CDMA 통신 시스템.6. The CDMA communication system of claim 5, wherein the value of the estimated value is fed back when the value is fed back. 코드순차에 의해 확산되는 수신기 데이타 순차는 검출기에 의해 회복되고, 송신된 데이타 순차의 값에 대한 추정치의 순차는 송신기 (들) 및 수신기 사이에 위치한 통신채널의 기술에 합체되는 동안 검출을 목적으로 계산되는 CDMA통신시스템용 수신기에 있어서, 상기 송신된 데이타 순차용 결합 확률 분포는 결합된 모멘트를 계산하여 계산되고 이로부터 상기 송신된 데이타 순차용 추정치의 순차가 유도되는 것을 특징으로 하는 CDMA 통신 시스템용 수신기.The receiver data sequence spread by the code sequence is recovered by the detector, and the sequence of estimates for the value of the transmitted data sequence is calculated for detection while incorporating the description of the communication channel located between the transmitter (s) and the receiver. A receiver for a CDMA communication system, wherein the transmitted data sequential combining probability distribution is calculated by calculating a combined moment from which a sequence of the transmitted data sequential estimates is derived. . 검출기가 송신기(들)와 수신기 사이에 위치된 통신채널의 디스크립션을 기초로 송신된 데이타 순차의 값에 대한 추정의 순차를 계산하는 경우의 CDMA통신 시스템의 수신기용 검출기에 있어서, 상기 송신된 데이터 순차용 결합 확률 분포는 결합된 모멘트를 계산해서 계산되며 이로부터 상기 송신된 데이타 순차용 추정의 순차가 유도되는 것을 특징으로 하는 CDMA 통신시스템의 수신기용 검출기.A detector for a receiver in a CDMA communication system in which the detector calculates a sequence of estimations for a value of a transmitted data sequence based on a description of a communication channel located between a transmitter (s) and a receiver, wherein the transmitted data sequence And the borrowing probability distribution is calculated by calculating the combined moments from which a sequence of the transmitted data sequential estimates is derived. 제8항에 있어서, 상기 확산에 이용되는 상기 코드 순차는 채널 디스크립션으로서 합체되는 것을 특징으로 하는 CDMA 통신 시스템의 수신기용 검출기.10. The detector of claim 8, wherein the code sequence used for spreading is incorporated as a channel description. 제3항에 있어서, 상기 채널기술로서 상기 코드순차를 합체하기 위하여, 상기 채널 디스크립션에 대해 사인 동작 수행을 제공하는 것을 특징으로 하는 CDMA 통신시스템의 수신기용 검출기.4. A detector as claimed in claim 3, wherein a sign operation is performed on the channel description to incorporate the code sequence as the channel description. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950700284A 1993-05-21 1994-05-20 CDMA communication system KR100336544B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4316939A DE4316939A1 (en) 1993-05-21 1993-05-21 CDMA transmission system
DEP4316939.2 1993-05-21
PCT/IB1994/000116 WO1994028642A1 (en) 1993-05-21 1994-05-20 Cdma communication system

Publications (2)

Publication Number Publication Date
KR950702767A true KR950702767A (en) 1995-07-29
KR100336544B1 KR100336544B1 (en) 2002-10-18

Family

ID=6488578

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950700284A KR100336544B1 (en) 1993-05-21 1994-05-20 CDMA communication system

Country Status (10)

Country Link
EP (1) EP0656162A1 (en)
JP (1) JPH07509356A (en)
KR (1) KR100336544B1 (en)
CN (1) CN1063600C (en)
AU (1) AU682689B2 (en)
CZ (1) CZ286408B6 (en)
DE (1) DE4316939A1 (en)
HU (1) HU215623B (en)
TW (1) TW241419B (en)
WO (1) WO1994028642A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5719899A (en) * 1994-02-25 1998-02-17 U.S. Philips Corporation Multiple access digital transmission system and a radio base station and a receiver for use in such a system
EP0767543A3 (en) * 1995-10-06 2000-07-26 Siemens Aktiengesellschaft Code division multiplex communication with interference suppression
DE19605567A1 (en) * 1996-02-15 1997-08-21 Sel Alcatel Ag Optical frequency-coded CDMA transmission system and optical receiver therefor
DE19638404C1 (en) * 1996-09-19 1998-02-19 Siemens Ag Symbol value sequence evaluation method for CDMA receiver
DE19717546B4 (en) * 1996-12-05 2014-05-15 Deutsche Telekom Ag Method and apparatus for decoding in a CDMA transmission system for demodulating a received signal which is in serial code chaining
US6377610B1 (en) * 1997-04-25 2002-04-23 Deutsche Telekom Ag Decoding method and decoding device for a CDMA transmission system for demodulating a received signal available in serial code concatenation
SG77607A1 (en) 1997-08-26 2001-01-16 Univ Singapore A multi-user code division multiple access receiver
US7486722B2 (en) 2001-04-18 2009-02-03 Bae Systems Information And Electronic Systems Integration Inc. Bandwidth efficient cable network modem
WO2002087099A1 (en) 2001-04-18 2002-10-31 Bae Systems Information And Electronic Systems Integration Inc. Bandwidth-efficient wireless network modem
US20030227879A1 (en) * 2002-06-05 2003-12-11 Farrokh Abrishamkar Method and apparatus for pilot estimation using a prediction error method with a kalman filter and pseudo-linear regression
US7599346B2 (en) 2002-11-19 2009-10-06 Bae Systems Information And Electronic Systems Integration Inc. Bandwidth-efficient wireless network modem
FI20085423A0 (en) * 2008-05-08 2008-05-08 Nokia Siemens Networks Oy Synchronization in a mobile communication system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5099493A (en) * 1990-08-27 1992-03-24 Zeger-Abrams Incorporated Multiple signal receiver for direct sequence, code division multiple access, spread spectrum signals
US5166953A (en) * 1990-10-30 1992-11-24 General Electric Company Technique for frequency-hopped spread spectrum communications
US5297161A (en) * 1992-06-29 1994-03-22 Motorola Inc. Method and apparatus for power estimation in an orthogonal coded communication system

Also Published As

Publication number Publication date
CZ286408B6 (en) 2000-04-12
WO1994028642A1 (en) 1994-12-08
EP0656162A1 (en) 1995-06-07
CZ14895A3 (en) 1995-06-14
JPH07509356A (en) 1995-10-12
HUT68377A (en) 1995-06-28
DE4316939A1 (en) 1994-11-24
AU682689B2 (en) 1997-10-16
TW241419B (en) 1995-02-21
CN1063600C (en) 2001-03-21
AU6686994A (en) 1994-12-20
HU215623B (en) 1999-01-28
CN1110072A (en) 1995-10-11
KR100336544B1 (en) 2002-10-18

Similar Documents

Publication Publication Date Title
DE60309457D1 (en) LOCAL DETERMINATION OF MOBILE STATIONS, PROCESSES AND SYSTEMS
KR950702767A (en) Code Division Multiple Processing (CDMA) communication system and receiver for the receiver (CDMA communication system)
AU2003277334A8 (en) System and method for tracking the location of multiple mobile radio transceiver units
EP0954124A3 (en) CDMA cellular communication system and method of detecting spreading code
GB9900340D0 (en) A method of and system for estimating a time of arrival of a radio signal
CA2446318A1 (en) System and method for central association and tracking in passive coherent location applications
DK0830797T3 (en) Method for communicating with and / or observing and / or locating objects and model for use in
MY125619A (en) System and method for determining the position of a wireless cdma transceiver
BR9917225A (en) Processes for geographically locating a subscriber unit within a cdma communication system, and for determining a distance between a subscriber unit and a base station in a cdma communication system, spread-spectrum cdma communication systems capable of geographically locating a subscriber, communication unit cdmacapable to determine a distance between a subscriber unit and a base station, and, subscriber unit for use in a cdma communication system
WO2002073230A3 (en) Wireless communications methods and systems for short-code and other spread spectrum waveform processing
EP0767543A3 (en) Code division multiplex communication with interference suppression
GB2402285A (en) Method for determining location information
WO2004036924A3 (en) Enhancing the accuracy of a location estimate
EP0913066A4 (en) Method for locating a mobile station
AU2001260851A1 (en) Time of arrival estimation for edge/gsm
CA2568247A1 (en) Cancellation of pilot and unwanted traffic signals in a cdma system
MXPA03008168A (en) Server-assisted position determination in a radio network.
EP0749213A3 (en) Spread spectrum signal receiving apparatus
EP0851601A3 (en) CDMA multi-code radio reception apparatus
EP0913971A3 (en) Channel Estimation in a CDMA cellular communication system
EP1397897A4 (en) Doppler spread/velocity estimation in mobile wireless communication devices and methods therefor
EP0794627A3 (en) Spread spectrum communication apparatus
US6175559B1 (en) Method for generating preamble sequences in a code division multiple access system
NO994743D0 (en) Method of transmission, as well as radio system
SE9602999D0 (en) Device and method of telecommunication system

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
LAPS Lapse due to unpaid annual fee